Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii

Blifernez-Klassen O, Klassen V, Doebbe A, Kersting K, Grimm P, Wobbe L, Kruse O (2012)
Nature communications 3.

Journal Article | Published | English

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Abstract
Plants convert sunlight to biomass, which is primarily composed of lignocellulose, the most abundant natural biopolymer and a potential feedstock for fuel and chemical production. Cellulose assimilation has so far only been described for heterotrophic organisms that rely on photosynthetically active primary producers of organic compounds. Among phototrophs, the unicellular green microalga Chlamydomonas reinhardtii is widely known as one of the best established model organisms. It occupies many habitats, including aquatic and soil ecosystems. This ubiquity underscores the versatile metabolic properties of this microorganism. Here we present yet another paradigm of adaptation for C. reinhardtii, highlighting its photoheterotrophic ability to utilize cellulose for growth in the absence of other carbon sources. When grown under CO(2)-limiting conditions in the light, secretion of endo-β-1,4-glucanases by the cell causes digestion of exogenous cellulose, followed by cellobiose uptake and assimilation. Phototrophic microbes like C. reinhardtii may thus serve as biocatalysts for cellulosic biofuel production.
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Blifernez-Klassen O, Klassen V, Doebbe A, et al. Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii. Nature communications. 2012;3.
Blifernez-Klassen, O., Klassen, V., Doebbe, A., Kersting, K., Grimm, P., Wobbe, L., & Kruse, O. (2012). Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii. Nature communications, 3.
Blifernez-Klassen, O., Klassen, V., Doebbe, A., Kersting, K., Grimm, P., Wobbe, L., and Kruse, O. (2012). Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii. Nature communications 3.
Blifernez-Klassen, O., et al., 2012. Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii. Nature communications, 3.
O. Blifernez-Klassen, et al., “Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii”, Nature communications, vol. 3, 2012.
Blifernez-Klassen, O., Klassen, V., Doebbe, A., Kersting, K., Grimm, P., Wobbe, L., Kruse, O.: Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii. Nature communications. 3, (2012).
Blifernez-Klassen, Olga, Klassen, Viktor, Doebbe, Anja, Kersting, Klaudia, Grimm, Philipp, Wobbe, Lutz, and Kruse, Olaf. “Cellulose degradation and assimilation by the unicellular phototrophic eukaryote Chlamydomonas reinhardtii”. Nature communications 3 (2012).
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PMID: 23169055
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